37248 Midland Railway Centre & 37057 Viking pass Sleaford North Junction on 17 January 1998 with the Hertfordshire Railtours 1Z46 08:00 Kings Cross to Newcastle 'East Coast Diversion' railtour. The train is just rejoining the Spalding to Lincoln line, which it had left only a mile south of this point, in order to pass through Sleaford station. The 37s would leave the train at York, with 56109 taking the tour on to Newcastle.